Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81749231 (number)

81749231 is an odd 8-digits composite number following 81749230 and preceding 81749232. In scientific notation, it is written as 8.1749231 × 10^7. The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors. There are 78930264 positive integers (up to 81749231) that are relatively prime to 81749231.

Interesting facts

81749231 has 4 divisors, whose sum is 84568200
The reverse of 81749231 is 13294718
Previous prime number is 29

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8

Name

Name	eighty-one million seven hundred forty-nine thousand two hundred thirty-one

Notation

Scientific notation	8.1749231 × 10^7
Engineering notation	8.1749231 × 10^6

Prime Factorization of 81749231

Prime Factorization 29 × 2818939

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81749231	Product of the distinct prime numbers

The prime factorization of 81749231 is 29 × 2818939. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 9, 14, 98, 376, 192, 6977, 3491, 73011, 56533, 117423, 117953, 6074107, 7626656, 55542706, 80762932, 93452167, 599296897, 7422683295, 3235447434

Basic calculations (n = 81749231)

Multiplication

n×y

n×2	163498462
n×3	245247693
n×4	326996924
n×5	408746155

Division

n÷y

n÷2	40874615.5
n÷3	27249743.666667
n÷3	20437307.75
n÷5	16349846.2

Exponentiation

n^y

n²	6682936769091361
n³	5.4632494169484E+23
n⁴	4.4661643859673E+31
n⁵	3.6510550407242E+39

Nth Root

^y√n

²√n	9041.5281341154
³√n	434.00482591419
⁴√n	95.086950388134
⁵√n	38.238137910708

Divisors of 81749231

1, 29, 2818939, 81749231

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81749230	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749231 can be divided by 4 positive divisors. The sum of these divisors (counting 81749231) is 1, the average is 0.25.

Base conversion 81749231

Base	System	Value
2	Binary	100110111110110010011101111
3	Ternary	12200211021212022
4	Quaternary	10313312103233
5	Quinary	131411433411
6	Senary	12040100355
8	Octal	467662357
10	Decimal	81749231
12	Duodecimal	234646bb
16	Hexadecimal	4df64ef
20	Vigesimal	15aid1b
36	Base36	1co63z

Cryptographic Hash Functions

md5	3193d874d416e9113bba8011e96d851b
sha1	b6869c322399dfbcc7f9319852054ef0bc2f38fb
sha256	b4516fa9d01b2170f26dfe9c8e67317836f77fcba3b9703c8b6295a658437077
sha512	ce7c97985140a27acd677413b5f1ad9bdd15fe85433203208251ce77a9d8be1e159519d033a6172b8d2c73d8b4270e42ff3d8384b2741a8213409156268c1dc8
ripemd-160	3ec82a73076d5a3da32a9ba139014f4c04d39867

81749231 as geometric shapes

Circle

Radius = n

Diameter	163498462
Circumference	513645567.09243
Area	2.0995065058183E+16

Sphere

Radius = n

Volume	2.2884405644019E+24
Surface area	8.398026023273E+16
Circumference	513645567.09243

Square

Length = n

Perimeter	326996924
Area	6682936769091361
Diagonal	115610871.19377

Cube

Length = n

Surface area	40097620614548166
Volume	5.4632494169484E+23
Space diagonal	141593821.57168

Equilateral Triangle

Length = n

Perimeter	245247693
Area	2.8937965069591E+15
Altitude	70796910.785842

Triangular Pyramid

Length = n

Surface area	2.8937965069591E+15
Volume	6.4385011833961E+22
Height	38536957.06459